I know this part of history is most mythic or unhistoric but
What if the partition of Visigothic Kingdom was made more peacfully, due to church influence?
Could be possible that :
-Al-Tariq's army is defeated in 711, but Roderic still die.
-New, stronger, islamic armies are victorious in 712, capturing all the middle of Hispania, including Toledo, but without Luisitania (not really defended yet), Murcia, Iberia and Asturia (much well taken by visigothic lords as Theodomir, Pelagius, Roderic's successor, Achila)
-New islamic expeditions in 713, taking Luisitania, Murcia, with and advence unil Ebro and Asturies, and divinding the kingdom between Achila and Pelasgius?
It's TL, would involve later a lesser role for Carlos-Magnus in Hispania, but i would want if this first part for an ATL is credible, or usable